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Cárdenas-Martínez K, Barragán-Cárdenas AC, de la Rosa-Arbeláez M, Parra-Giraldo CM, Ochoa-Zarzosa A, Lopez-Meza JE, Rivera-Monroy ZJ, Fierro-Medina R, García-Castañeda JE. Evaluating the In Vitro Activity and Safety of Modified LfcinB Peptides as Potential Colon Anticancer Agents: Cell Line Studies and Insect-Based Toxicity Assessments. ACS Omega 2023; 8:37948-37957. [PMID: 37867694 PMCID: PMC10586019 DOI: 10.1021/acsomega.3c03455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/15/2023] [Indexed: 10/24/2023]
Abstract
Anticancer peptides are increasingly being considered as alternative treatments for cancer due to their potency, selectivity, and low toxicity. Previously, the peptide LfcinB (21-25)Pal showed in vitro anticancer effects against the Caco-2 colon cancer cell line (half-maximal inhibitory concentration (IC50): 86 μM). In this study, we developed modifications to the peptide sequence to increase its anticancer activity. Sequence modifications were made such as the inclusion of amino hexanoic acid (Ahx), N-terminal biotinylation, acetylation, and substitutions of Orn for Arg and/or d-Arg by l-Arg. The molecules were synthesized using manual solid-phase peptide synthesis (SPPS), and their synthetic feasibility (SAScore) ranged from 6.2 to 7.6. The chromatographic purities of the synthesized peptides were greater than 89%. We found that Ahx-RWQWRWQWR and RWQWRWQW-Orn showed activity against both Caco-2 and HT-29 cell lines and decreased IC50 values by approx. 50% in Caco-2 cells (IC50: 40 μM) when compared to the parent peptide RWQWRWQWR. Moreover, the modified peptides demonstrated lower hemolytic effects, with values <10% at 200 μg/mL. Toxicity was assessed using the Galleria mellonella model and the half-maximal lethal dose (LD50) for the best peptides was >100 mg/kg, indicating that their toxicity is classified as moderately toxic or lower. In contrast, cisplatin showed an LD50 of 13 mg/Kg. The designed anticancer peptides presented good in vitro activity and low toxicity, making them promising molecules for future drug development studies.
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Affiliation(s)
- Karen
J. Cárdenas-Martínez
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Andrea C. Barragán-Cárdenas
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Manuela de la Rosa-Arbeláez
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Claudia M. Parra-Giraldo
- Proteomics
and Human Mycosis Unit, Infectious Diseases Research Group, Department
of Microbiology, Pontificia Universidad
Javeriana, Bogotá 110231, Colombia
| | - Alejandra Ochoa-Zarzosa
- Multidisciplinary
Centre for Studies in Biotechnology, Universidad
Michoacana de San Nicolas de Hidalgo, Km 9.5, Carretera Morelia, Zinapécuaro, Tarímbaro 58880, México
| | - Joel E. Lopez-Meza
- Multidisciplinary
Centre for Studies in Biotechnology, Universidad
Michoacana de San Nicolas de Hidalgo, Km 9.5, Carretera Morelia, Zinapécuaro, Tarímbaro 58880, México
| | - Zuly J. Rivera-Monroy
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Ricardo Fierro-Medina
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
| | - Javier E. García-Castañeda
- Department
of Pharmacy, Department of Biotechnology, Deparment of Chemistry, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá 111321, Colombia
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Ramos LS, Parra-Giraldo CM, Branquinha MH, Santos ALS. Cell Aggregation Capability of Clinical Isolates from Candida auris and Candida haemulonii Species Complex. Trop Med Infect Dis 2023; 8:382. [PMID: 37624320 PMCID: PMC10460019 DOI: 10.3390/tropicalmed8080382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
The opportunistic fungal pathogens belonging to the Candida haemulonii complex and the phylogenetically related species Candida auris are well-known for causing infections that are difficult to treat due to their multidrug-resistance profiles. Candida auris is even more worrisome due to its ability to cause outbreaks in healthcare settings. These emerging yeasts produce a wide range of virulence factors that facilitate the development of the infectious process. In recent years, the aggregative phenotype has been receiving attention, as it is mainly associated with defects in cellular division and its possible involvement in helping the fungus to escape from the host immune responses. In the present study, we initially investigated the aggregation ability of 18 clinical isolates belonging to the C. haemulonii species complex (C. haemulonii sensu stricto, C. duobushaemulonii, and C. haemulonii var. vulnera) and C. auris. Subsequently, we evaluated the effects of physicochemical factors on fungal aggregation competence. The results demonstrated that cell-to-cell aggregation was a typically time-dependent event, in which almost all studied fungal isolates of both the C. haemulonii species complex and C. auris exhibited high aggregation after 2 h of incubation at 37 °C. Interestingly, the fungal cells forming the aggregates remained viable. The aggregation of all isolates was not impacted by pH, temperature, β-mercaptoethanol (a protein-denaturing agent), or EDTA (a chelator agent). Conversely, proteinase K, trypsin, and sodium dodecyl sulfate (SDS) significantly diminished the fungal aggregation. Collectively, our results demonstrated that the aggregation ability of these opportunistic yeast pathogens is time-dependent, and surface proteins and hydrophobic interactions seem to mediate cell aggregation since the presence of proteases and anionic detergents affected the aggregation capability. However, further studies are necessary to better elucidate the molecular aspects of this intriguing phenomenon.
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Affiliation(s)
- Lívia S. Ramos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (L.S.R.); (M.H.B.)
| | - Claudia M. Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
| | - Marta H. Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (L.S.R.); (M.H.B.)
- Rede Micologia RJ—Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-902, Brazil
| | - André L. S. Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (L.S.R.); (M.H.B.)
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
- Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-909, Brazil
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Alvarez-Moreno CA, Morales-López S, Rodriguez GJ, Rodriguez JY, Robert E, Picot C, Ceballos-Garzon A, Parra-Giraldo CM, Le Pape P. The Mortality Attributable to Candidemia in C. auris Is Higher than That in Other Candida Species: Myth or Reality? J Fungi (Basel) 2023; 9:jof9040430. [PMID: 37108885 PMCID: PMC10143486 DOI: 10.3390/jof9040430] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/12/2023] [Accepted: 03/21/2023] [Indexed: 04/03/2023] Open
Abstract
Candida auris has become a major health threat due to its transmissibility, multidrug resistance and severe outcomes. In a case-control design, 74 hospitalised patients with candidemia were enrolled. In total, 22 cases (29.7%) and 52 controls (C. albicans, 21.6%; C. parapsilosis, 21.6%; C. tropicalis, 21.6%; C. glabrata, 1.4%) were included and analysed in this study. Risk factors, clinical and microbiological characteristics and outcomes of patients with C. auris and non-auris Candida species (NACS) candidemia were compared. Previous fluconazole exposure was significantly higher in C. auris candidemia patients (OR 3.3; 1.15–9.5). Most C. auris isolates were resistant to fluconazole (86.3%) and amphotericin B (59%) whilst NACS isolates were generally susceptible. No isolates resistant to echinocandins were detected. The average time to start antifungal therapy was 3.6 days. Sixty-three (85.1%) patients received adequate antifungal therapy, without significant differences between the two groups. The crude mortality at 30 and 90 days of candidemia was up to 37.8% and 40.5%, respectively. However, there was no difference in mortality both at 30 and 90 days between the group with candidemia by C. auris (31.8%) and by NACS (42.3%) (OR 0.6; 95% IC 0.24–1.97) and 36.4% and 42.3% (0.77; 0.27–2.1), respectively. In this study, mortality due to candidemia between C. auris and NACS was similar. Appropriate antifungal therapy in both groups may have contributed to finding no differences in outcomes.
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Affiliation(s)
- Carlos A. Alvarez-Moreno
- Facultad de Medicina, Universidad Nacional de Colombia, Clínica Universitaria Colombia, Clínica Colsanitas, Bogotá 111321, Colombia
- Correspondence: ; Tel.: +57-31-4330-2367
| | - Soraya Morales-López
- Grupo CINBIOS, Programa de Microbiología, Universidad Popular del Cesar, Valledupar 200004, Colombia
| | - Gerson J. Rodriguez
- Centro de Investigaciones Microbiológicas del Cesar (CIMCE), Valledupar 200002, Colombia
| | - Jose Y. Rodriguez
- Centro de Investigaciones Microbiológicas del Cesar (CIMCE), Valledupar 200002, Colombia
| | - Estelle Robert
- Cibles et Médicaments des Infections et de l’Immunité, Nantes Université, CHU de Nantes, IICiMed, 10 UR1155, 44000 Nantes, France
| | - Carine Picot
- Cibles et Médicaments des Infections et de l’Immunité, Nantes Université, CHU de Nantes, IICiMed, 10 UR1155, 44000 Nantes, France
| | - Andrés Ceballos-Garzon
- Cibles et Médicaments des Infections et de l’Immunité, Nantes Université, CHU de Nantes, IICiMed, 10 UR1155, 44000 Nantes, France
- Unidad de Investigacion en Proteómica y Micosis Humanas, Grupo de investigacion en Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Claudia M. Parra-Giraldo
- Unidad de Investigacion en Proteómica y Micosis Humanas, Grupo de investigacion en Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Patrice Le Pape
- Cibles et Médicaments des Infections et de l’Immunité, Nantes Université, CHU de Nantes, IICiMed, 10 UR1155, 44000 Nantes, France
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Ceballos-Garzon A, Peñuela A, Valderrama-Beltrán S, Vargas-Casanova Y, Ariza B, Parra-Giraldo CM. Emergence and circulation of azole-resistant C. albicans, C. auris and C. parapsilosis bloodstream isolates carrying Y132F, K143R or T220L Erg11p substitutions in Colombia. Front Cell Infect Microbiol 2023; 13:1136217. [PMID: 37026059 PMCID: PMC10070958 DOI: 10.3389/fcimb.2023.1136217] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/07/2023] [Indexed: 04/08/2023] Open
Abstract
Methods Over a four-year period, 123 Candida bloodstream isolates were collected at a quaternary care hospital. The isolates were identified by MALDI-TOF MS and their fluconazole (FLC) susceptibility patterns were assessed according to CLSI guidelines. Subsequently, sequencing of ERG11, TAC1 or MRR1, and efflux pump activity were performed for resistant isolates. Results Out of 123 clinical strains,C. albicans accounted for 37.4%, followed by C. tropicalis 26.8%, C. parapsilosis 19.5%, C. auris 8.1%, C. glabrata 4.1%, C. krusei 2.4% and C. lusitaniae 1.6%. Resistance to FLC reached 18%; in addition, a high proportion of isolates were cross-resistant to voriconazole. Erg11 amino acid substitutions associated with FLC-resistance (Y132F, K143R, or T220L) were found in 11/19 (58%) of FLCresistant isolates. Furthermore, novel mutations were found in all genes evaluated. Regarding efflux pumps, 8/19 (42%) of FLC-resistant Candida spp strains showed significant efflux activity. Finally, 6/19 (31%) of FLC-resistant isolates neither harbored resistance-associated mutations nor showed efflux pump activity. Among FLC-resistant species, C. auris 7/10 (70%) and C. parapsilosis 6/24 (25%) displayed the highest percentages of resistance (C. albicans 6/46, 13%). Discussion Overall, 68% of FLC-resistant isolates exhibited a mechanism that could explain their phenotype (e.g. mutations, efflux pump activity, or both). We provide evidence that isolates from patients admitted to a Colombian hospital harbor amino acid substitutions related to resistance to one of the most commonly used molecules in the hospital setting, with Y132F being the most frequently detected.
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Affiliation(s)
- Andres Ceballos-Garzon
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Ana Peñuela
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Sandra Valderrama-Beltrán
- Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Yerly Vargas-Casanova
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Beatriz Ariza
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Claudia M. Parra-Giraldo
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
- *Correspondence: Claudia M. Parra-Giraldo,
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Téllez-Corral MA, Herrera-Daza E, Cuervo-Jimenez HK, Arango-Jimenez N, Morales-Vera DZ, Velosa-Porras J, Latorre-Uriza C, Escobar-Arregoces FM, Hidalgo-Martinez P, Cortés ME, Roa-Molina NS, Otero L, Parra-Giraldo CM. Patients with obstructive sleep apnea can favor the predisposing factors of periodontitis by the presence of P. melaninogenica and C. albicans, increasing the severity of the periodontal disease. Front Cell Infect Microbiol 2022; 12:934298. [PMID: 36189359 PMCID: PMC9519896 DOI: 10.3389/fcimb.2022.934298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 08/10/2022] [Indexed: 12/02/2022] Open
Abstract
Objective The aim of this study was to analyze the cultivable oral microbiota of patients with obstructive sleep apnea (OSA) and its association with the periodontal condition. Methods The epidemiology profile of patients and their clinical oral characteristics were determined. The microbiota was collected from saliva, subgingival plaque, and gingival sulcus of 93 patients classified into four groups according to the periodontal and clinical diagnosis: Group 1 (n = 25), healthy patients; Group 2 (n = 17), patients with periodontitis and without OSA; Group 3 (n = 19), patients with OSA and without periodontitis; and Group 4 (n = 32), patients with periodontitis and OSA. Microbiological samples were cultured, classified, characterized macroscopically and microscopically, and identified by MALDI-TOF-MS. The distribution of complexes and categories of microorganisms and correlations were established for inter- and intra-group of patients and statistically evaluated using the Spearman r test (p-value <0.5) and a multidimensional grouping analysis. Result There was no evidence between the severity of OSA and periodontitis (p = 0.2813). However, there is a relationship between the stage of periodontitis and OSA (p = 0.0157), with stage III periodontitis being the one with the highest presence in patients with severe OSA (prevalence of 75%; p = 0.0157), with more cases in men. The greatest distribution of the complexes and categories was found in oral samples of patients with periodontitis and OSA (Group 4 P-OSA); even Candida spp. were more prevalent in these patients. Periodontitis and OSA are associated with comorbidities and oral conditions, and the microorganisms of the orange and red complexes participate in this association. The formation of the dysbiotic biofilm was mainly related to the presence of these complexes in association with Candida spp. Conclusion Periodontopathogenic bacteria of the orange complex, such as Prevotella melaninogenica, and the yeast Candida albicans, altered the cultivable oral microbiota of patients with periodontitis and OSA in terms of diversity, possibly increasing the severity of periodontal disease. The link between yeasts and periodontopathogenic bacteria could help explain why people with severe OSA have such a high risk of stage III periodontitis. Antimicrobial approaches for treating periodontitis in individuals with OSA could be investigated in vitro using polymicrobial biofilms, according to our findings.
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Affiliation(s)
- Mayra A. Téllez-Corral
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Unidad de Investigación en Proteómica y Micosis Humanas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Facultade de Odontología, Programa de Pós-graduação em Inovação Tecnológica, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Eddy Herrera-Daza
- Departamento de Matemáticas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Hayde K. Cuervo-Jimenez
- Unidad de Investigación en Proteómica y Micosis Humanas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Natalia Arango-Jimenez
- Periodoncia, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Darena Z. Morales-Vera
- Periodoncia, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Juliana Velosa-Porras
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Catalina Latorre-Uriza
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Periodoncia, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Francina M. Escobar-Arregoces
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Periodoncia, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Patricia Hidalgo-Martinez
- Clínica del Sueño, Hospital Universitario San Ignacio y Facultad de Medicina, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Maria E. Cortés
- Facultade de Odontología, Programa de Pós-graduação em Inovação Tecnológica, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Nelly S. Roa-Molina
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Liliana Otero
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Claudia M. Parra-Giraldo
- Unidad de Investigación en Proteómica y Micosis Humanas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- *Correspondence: Claudia M. Parra-Giraldo,
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Ceballos-Garzon A, Monteoliva L, Gil C, Alvarez-Moreno C, Vega-Vela NE, Engelthaler DM, Bowers J, Le Pape P, Parra-Giraldo CM. Genotypic, proteomic, and phenotypic approaches to decipher the response to caspofungin and calcineurin inhibitors in clinical isolates of echinocandin-resistant Candida glabrata. J Antimicrob Chemother 2021; 77:585-597. [PMID: 34893830 PMCID: PMC8865013 DOI: 10.1093/jac/dkab454] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 11/09/2021] [Indexed: 01/20/2023] Open
Abstract
Background Echinocandin resistance represents a great concern, as these drugs are recommended as first-line therapy for invasive candidiasis. Echinocandin resistance is conferred by mutations in FKS genes. Nevertheless, pathways are crucial for enabling tolerance, evolution, and maintenance of resistance. Therefore, understanding the biological processes and proteins involved in the response to caspofungin may provide clues indicating new therapeutic targets. Objectives We determined the resistance mechanism and assessed the proteome response to caspofungin exposure. We then evaluated the phenotypic impact of calcineurin inhibition by FK506 and cephalosporine A (CsA) on caspofungin-resistant Candida glabrata isolates. Methods Twenty-five genes associated with caspofungin resistance were analysed by NGS, followed by studies of the quantitative proteomic response to caspofungin exposure. Then, susceptibility testing of caspofungin in presence of FK506 and CsA was performed. The effects of calcineurin inhibitor/caspofungin combinations on heat stress (40°C), oxidative stress (0.2 and 0.4 mM menadione) and on biofilm formation (polyurethane catheter) were analysed. Finally, a Galleria mellonella model using blastospores (1 × 109 cfu/mL) was developed to evaluate the impact of the combinations on larval survival. Results F659-del was found in the FKS2 gene of resistant strains. Proteomics data showed some up-regulated proteins are involved in cell-wall biosynthesis, response to stress and pathogenesis, some of them being members of calmodulin–calcineurin pathway. Therefore, the impact of calmodulin inhibition was explored. Calmodulin inhibition restored caspofungin susceptibility, decreased capacity to respond to stress conditions, and reduced biofilm formation and in vivo pathogenicity. Conclusions Our findings confirm that calmodulin-calcineurin-Crz1 could provide a relevant target in life-threatening invasive candidiasis.
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Affiliation(s)
- Andres Ceballos-Garzon
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
- Department of Parasitology and Medical Mycology, Faculty of Pharmacy, University of Nantes, Nantes Atlantique Universities, Nantes, France
| | - Lucia Monteoliva
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Concha Gil
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
- Unidad de Proteómica, Universidad Complutense de Madrid, Madrid, Spain
| | - Carlos Alvarez-Moreno
- Department of Internal Medicine, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
- Clínica Universitaria Colombia, Clinica Colsanitas, Bogotá, Colombia
| | - Nelson E Vega-Vela
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
| | | | - Jolene Bowers
- Translational Genomics Research Institute, Flagstaff, AZ, USA
| | - Patrice Le Pape
- Department of Parasitology and Medical Mycology, Faculty of Pharmacy, University of Nantes, Nantes Atlantique Universities, Nantes, France
| | - Claudia M Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C., Colombia
- Corresponding author. E-mail:
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7
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Carvajal SK, Alvarado M, Rodríguez YM, Parra-Giraldo CM, Varón C, Morales-López SE, Rodríguez JY, Gómez BL, Escandón P. Pathogenicity Assessment of Colombian Strains of Candida auris in the Galleria mellonella Invertebrate Model. J Fungi (Basel) 2021; 7:jof7060401. [PMID: 34063862 PMCID: PMC8223996 DOI: 10.3390/jof7060401] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 02/07/2023] Open
Abstract
Candida auris, first described in 2009, is an opportunistic pathogenic yeast that causes nosocomial outbreaks around the world, with high mortality rates associated with therapeutic failure. In this study, we evaluated the pathogenicity of 107 isolates from two cities in Colombia, associated with fungemia or colonization processes; to achieve this, we used the Galleria mellonella invertebrate model to compare pathogenicity. Our results showed that less than half of the total isolates of C. auris presented a high pathogenicity compared to the reference strain SC5314, and most of those highly pathogenic strains were from colonization processes. We observed that there was formation of large aggregates of cells that cannot be disrupted easily, without statistically significant differences between the pathogenicity of the aggregated and non-aggregated strains. In addition, protease activity was observed in 100% of the C. auris strains; phospholipase and hemolysin activity were observed in 67.3 and 68.2% of the studied strains, respectively. In conclusion, these results highlight the utility of determining survival using G. mellonella, which allowed us to provide new information on the pathogenicity, enzymatic activity, and the relationship of the aggregated and non-aggregated phenotypes of C. auris in this model.
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Affiliation(s)
- Silvia Katherine Carvajal
- Grupo de Microbiología, Instituto Nacional de Salud, Bogota 111321, Colombia; (S.K.C.); (M.A.)
- Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Unidad de Proteómica y Micosis Humanas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogota 110231, Colombia;
| | - Maira Alvarado
- Grupo de Microbiología, Instituto Nacional de Salud, Bogota 111321, Colombia; (S.K.C.); (M.A.)
| | - Yuli M. Rodríguez
- Bacteriología y Laboratorio Clínico, Universidad Colegio Mayor de Cundinamarca, Bogotá 111311, Colombia;
| | - Claudia M. Parra-Giraldo
- Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Unidad de Proteómica y Micosis Humanas, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogota 110231, Colombia;
| | - Carmen Varón
- Hospital Infantil Napoleón Franco Pareja, Cartagena 130010, Colombia;
| | - Soraya E. Morales-López
- Grupo CINBIOS, Departamento de Microbiología, Universidad Popular del Cesar, Valledupar 200004, Colombia;
| | - José Y. Rodríguez
- Centro de Investigaciones Microbiológicas del Cesar, Valledupar 200002, Colombia;
- Clínica Alta Complejidad, Valledupar 200002, Colombia
- Clínica Laura Daniela, Valledupar 200002, Colombia
- Instituto Cardiovascular del Cesar, Valledupar 200002, Colombia
| | - Beatriz L. Gómez
- Translational Microbiology and Emerging Diseases (MICROS), School of Medicine and Health Sciences, Universidad del Rosario, Bogota 111221, Colombia;
| | - Patricia Escandón
- Grupo de Microbiología, Instituto Nacional de Salud, Bogota 111321, Colombia; (S.K.C.); (M.A.)
- Correspondence: ; Tel.: +57-1-2207700 (ext. 1558)
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8
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Rodríguez-Leguizamón G, Ceballos-Garzón A, Suárez CF, Patarroyo MA, Parra-Giraldo CM. Robust, Comprehensive Molecular, and Phenotypical Characterisation of Atypical Candida albicans Clinical Isolates From Bogotá, Colombia. Front Cell Infect Microbiol 2020; 10:571147. [PMID: 33344263 PMCID: PMC7738613 DOI: 10.3389/fcimb.2020.571147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 11/03/2020] [Indexed: 11/13/2022] Open
Abstract
Candida albicans is commensal in human microbiota and is known to be the commonest opportunistic pathogen, having variable clinical outcomes that can lead to up to 60% mortality. Such wide clinical behaviour can be attributed to its phenotypical plasticity and high genetic diversity. This study characterised 10 Colombian clinical isolates which had already been identified as C. albicans by molecular tests; however, previous bioinformatics analysis of protein mass spectra and phenotypical characteristics has shown that this group of isolates has atypical behaviour, sharing characteristics of both C. africana and C. albicans. This study was aimed at evaluating atypical isolates' pathogenic capability in the Galleria mellonella model; susceptibility profiles were determined and MLST was used for molecular characterisation. Cluster analysis, enabling unbiased bootstrap to classify the isolates and establish their cluster membership and e-BURST, was used for establishing clonal complexes (CC). Both approaches involved using representative MLST data from the 18 traditional C. albicans clades, as well as C. albicans-associated and minor species. Ten atypical isolates were distributed as follows: 6/10 (B71, B41, B60, R6, R41, and R282) were grouped into a statistically well-supported atypical cluster (AC) and constituted a differentiated CC 6; 2/10 of the isolates were clearly grouped in clade 1 and were concurrent in CC 4 (B80, B44). Another 2/10 atypical isolates were grouped in clade 10 and concurred in CC 7 (R425, R111); most atypical isolates were related to geographically distant isolates and some represented new ST. Isolates B41 and R41 in the AC had greater virulence. Isolate B44 was fluconazole-resistant and was grouped in clade 1. The atypical nature of the isolates studied here was demonstrated by the contrast between phenotypical traits (C. africana-like), molecular markers (C. albicans-like), virulence, and antifungal resistance, highlighting the widely described genetic plasticity for this genus. Our results showed that the atypical isolates forming well-differentiated groups belonged to C. albicans. Our findings could contribute towards developing molecular epidemiology approaches for managing hospital-acquired infection.
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Affiliation(s)
- Giovanni Rodríguez-Leguizamón
- Hospital Universitario Mayor Méderi-Universidad del Rosario, Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Andrés Ceballos-Garzón
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos F Suárez
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia.,Biomathematics Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Manuel A Patarroyo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia.,Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Claudia M Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
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9
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Ceballos-Garzón A, Cabrera E, Cortes-Fraile GC, León A, Aguirre-Guataqui K, Linares-Linares MY, Ariza B, Valderrama-Beltrán S, Parra-Giraldo CM. In-house protocol and performance of MALDI-TOF MS in the early diagnosis of bloodstream infections in a fourth-level hospital in Colombia: Jumping to full use of this technology. Int J Infect Dis 2020; 101:85-89. [PMID: 33011284 DOI: 10.1016/j.ijid.2020.09.1469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Bloodstream infections (BSIs) are a major cause of mortality in hospitalized patients. Rapid diagnosis is crucial because any delay in the antimicrobial treatment is associated with an increase in adverse patient outcomes. The application of matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) technology directly to blood cultures permits earlier identification of BSIs and facilitates treatment management. METHODS A total of 470 positive blood cultures from patient samples were analyzed using Standard Aerobic/F and Anaerobic/F blood culture media. Isolates were identified using conventional identification methods and by the direct method using the MALDI-TOF MS system. RESULTS In 470 blood cultures, the direct method showed good identification results (420/470, 89%); specifically, accurate species and genus identification in 283/470 (60%), and only correct genus identification in 137/470 (29%). The direct protocol had better performance for Gram-negative compared to Gram-positive bacteria (97% vs 76%) and was unable to identify the positive blood cultures for both yeasts and some bacteria, mostly Gram-positive (50/470). CONCLUSIONS The protocol used here gave good and reliable results, being available up to 24 h earlier, while also leading to better use of MALDI-TOF.
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Affiliation(s)
- Andrés Ceballos-Garzón
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia.
| | - Erika Cabrera
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá D.C, Colombia.
| | - Gloria Cecilia Cortes-Fraile
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá D.C, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia.
| | - Aura León
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá D.C, Colombia.
| | - Katherine Aguirre-Guataqui
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Melva Y Linares-Linares
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia.
| | - Beatriz Ariza
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá D.C, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia.
| | - Sandra Valderrama-Beltrán
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia; Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá D.C, Colombia.
| | - Claudia M Parra-Giraldo
- Unidad de Proteomica y Micosis Humanas, Grupo de Investigación en Enfermedades Infecciosas, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Colombia.
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10
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Muñoz JE, Ramirez LM, Dias LDS, Rivas LA, Ramos LS, Santos ALS, Taborda CP, Parra-Giraldo CM. Pathogenicity Levels of Colombian Strains of Candida auris and Brazilian Strains of Candida haemulonii Species Complex in Both Murine and Galleria mellonella Experimental Models. J Fungi (Basel) 2020; 6:jof6030104. [PMID: 32664191 PMCID: PMC7558079 DOI: 10.3390/jof6030104] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/04/2020] [Accepted: 07/05/2020] [Indexed: 02/07/2023] Open
Abstract
Candida auris and Candida haemulonii complex (C. haemulonii, C. haemulonii var. vulnera and C. duobushaemulonii) are phylogenetically related species that share some physiological features and habits. In the present study, we compared the virulence of these yeast species using two different experimental models: (i) Galleria mellonella larvae to evaluate the survival rate, fungal burden, histopathology and phagocytosis index and (ii) BALB/c mice to evaluate the survival. In addition, the fungal capacity to form biofilm over an inert surface was analyzed. Our results showed that in both experimental models, the animal survival rate was lower when infected with C. auris strains than the C. haemulonii species complex. The hemocytes of G. mellonella showed a significantly reduced ability to phagocytize the most virulent strains forming the C. haemulonii species complex. Interestingly, for C. auris, it was impossible to measure the phagocytosis index due to a general lysis of the hemocytes. Moreover, it was observed a greater capability of biofilm formation by C. auris compared to C. haemulonii species complex. In conclusion, we observed that C. auris and C. haemulonii complex have different levels of pathogenicity in the experimental models employed in the present study.
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Affiliation(s)
- Julián E. Muñoz
- MICROS Group, Medicine Traslacional Institute, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, D.C. 111221, Colombia;
| | - Laura M. Ramirez
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110231, Colombia; (L.M.R.); (L.A.R.)
| | - Lucas dos Santos Dias
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, SP 05508-060, Brazil; (L.d.S.D.); (C.P.T.)
| | - Laura A. Rivas
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110231, Colombia; (L.M.R.); (L.A.R.)
| | - Lívia S. Ramos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-901, Brazil; (L.S.R.); (A.L.S.S.)
| | - André L. S. Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-901, Brazil; (L.S.R.); (A.L.S.S.)
| | - Carlos P. Taborda
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo, SP 05508-060, Brazil; (L.d.S.D.); (C.P.T.)
- Laboratory of Medical Mycology-LIM53/IMTSP, University of São Paulo (USP), São Paulo, SP 05508-060, Brazil
| | - Claudia M. Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, D.C. 110231, Colombia; (L.M.R.); (L.A.R.)
- Correspondence: ; Tel.: +57-1-3208320 (ext. 4305)
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11
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Rodriguez YJ, Quejada LF, Villamil JC, Baena Y, Parra-Giraldo CM, Perez LD. Development of Amphotericin B Micellar Formulations Based on Copolymers of Poly(ethylene glycol) and Poly(ε-caprolactone) Conjugated with Retinol. Pharmaceutics 2020; 12:E196. [PMID: 32106492 PMCID: PMC7150995 DOI: 10.3390/pharmaceutics12030196] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/02/2022] Open
Abstract
Amphotericin B (AmB) is a broad spectrum of antifungal drug used to treat antifungal diseases. However, due to the high toxicity of AmB, treated patients may suffer the risk of side effects, such as renal failure. Nanoencapsulation strategies have been reported to elicit low toxicity, albeit most of them possess low encapsulation efficiency. The aim of this research is to develop micellar delivery systems for AmB with reduced toxicity while maintaining its affectivity by employing retinol (RET)-conjugated amphiphilic block copolymers (ABCs) as precursors. Copolymers composed of poly(ε-caprolactone) (A) and polyethylenglycol (B) of types AB and ABA were synthesized by ring opening polymerization and subsequently conjugated with RET by Steglich esterification. 1H-NMR spectroscopy was used to corroborate the structure of copolymers and their conjugates and determine their molecular weights. Analysis by gel permeation chromatography also found that the materials have narrow distributions. The resulting copolymers were used as precursors for delivery systems of AmB, thus reducing its aggregation and consequently causing a low haemolytic effect. Upon conjugation with RET, the encapsulation capacity was enhanced from approximately 2 wt % for AB and ABA copolymers to 10 wt %. AmB encapsulated in polymer micelles presented improved antifungal efficiency against Candida albicans and Candida auris strains compared with Fungizone®, as deduced from the low minimum inhibitory concentration.
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Affiliation(s)
- Yeimy J. Rodriguez
- Grupo de Investigación en Macromoléculas, Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia;
| | - Luis F. Quejada
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Jean C. Villamil
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Yolima Baena
- Grupo de Investigación SILICOMOBA, Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia
| | - Claudia M. Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Carrera 7 No. 43-82, Bogotá D.C. 110231, Colombia; (L.F.Q.); (J.C.V.)
| | - Leon D. Perez
- Grupo de Investigación en Macromoléculas, Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia-Sede Bogotá, Carrera 45 No. 26-85, Edificio 451 of. 449, Bogotá D.C. 11001, Colombia;
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12
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Ceballos-Garzon A, Wintaco-Martínez LM, Velez N, Hernandez-Padilla C, De la Hoz A, Valderrama-Beltrán SL, Alvarez-Moreno CA, Pape PL, Ramírez JD, Parra-Giraldo CM. Persistence of Clonal Azole-Resistant Isolates of Candida albicans from a Patient with Chronic Mucocutaneous Candidiasis in Colombia. J Glob Infect Dis 2020; 12:16-20. [PMID: 32165797 PMCID: PMC7045761 DOI: 10.4103/jgid.jgid_74_19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/11/2019] [Accepted: 10/31/2019] [Indexed: 12/28/2022] Open
Abstract
PURPOSE The present article describes retrospectively a case of a patient with chronic mucocutaneous candidiasis (CMC) who presented recurrent Candida albicans infection since he was 6 months old. We obtained 16 isolates recovered during a 4-year period. Our purpose was to determinate the susceptibility, genotyping, and the pathogenicity profile in all the isolates. METHODS Sixteen C. albicans were isolated from a 25-year-old male with several recurrent fungal infections admitted to Hospital. The isolates were recovered during 4 years from a different anatomical origin. We typified them by multilocus sequence typing, also we evaluated susceptibility to fluconazole, itraconazole, voriconazole, posaconazole, isavuconazole, caspofungin, and amphotericin B by microdilution method and we also test the pathogenic capacity in the Galleria mellonella model. RESULTS Genotyping of all clinical isolates showed the persistence of the same diploid sequence type (DST). Isolates changed their susceptibility profile over time, but there were no significant statistical differences in pathogenicity. CONCLUSION Herein, a persistent clonal isolates of C. albicans (DST 918) in a patient with CMC, showed changes in its susceptibility profile after several antifungal treatments acquiring gradual resistance to the azole drugs, which did not affect their pathogenicity.
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Affiliation(s)
- Andrés Ceballos-Garzon
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
- Department of Parasitology and Medical Mycology, Faculty of Pharmacy, University of Nantes, Nantes Atlantique Universities, Nantes, France
| | - Luz M Wintaco-Martínez
- Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá DC, Colombia
| | - Norida Velez
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Catalina Hernandez-Padilla
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
| | - Alejandro De la Hoz
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
| | - Sandra Liliana Valderrama-Beltrán
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
| | - Carlos A Alvarez-Moreno
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
| | - Patrice Le Pape
- Department of Parasitology and Medical Mycology, Faculty of Pharmacy, University of Nantes, Nantes Atlantique Universities, Nantes, France
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá DC, Colombia
| | - Claudia M Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
- Grupo de Investigación en Enfermedades Infecciosas, Unidad de Infectología, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Facultad de Medicina, Bogotá, Colombia
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13
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Villamil JC, Parra-Giraldo CM, Pérez LD. Enhancing the performance of PEG-b-PCL copolymers as precursors of micellar vehicles for amphotericin B through its conjugation with cholesterol. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.086] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Ceballos-Garzón A, Cortes G, Morio F, Zamora-Cruz EL, Linares MY, Ariza BE, Valderrama SL, Garzón JR, Alvarez-Moreno CA, Le Pape P, Parra-Giraldo CM. Comparison between MALDI-TOF MS and MicroScan in the identification of emerging and multidrug resistant yeasts in a fourth-level hospital in Bogotá, Colombia. BMC Microbiol 2019; 19:106. [PMID: 31122184 PMCID: PMC6533654 DOI: 10.1186/s12866-019-1482-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 05/07/2019] [Indexed: 02/07/2023] Open
Abstract
Background The introduction of MALDI-TOF MS in the clinical microbiology laboratory has modified the approaches for the identification of fungi. Thanks to this tool, it is possible to identify cryptic species, which possess critical susceptibility patterns. Clinical strains were identified using the MicroScan and MALDI-TOF MS systems. Discrepant results from both methods were investigated using ITS rDNA barcoding. Finally, these isolates were also tested for in vitro susceptibility. Results The percentage of agreement between both methods to 498 yeast isolates was of 93.6% (32 discrepant isolates). The concordance of ITS sequencing with MALDI-TOF MS was higher (99%) than that of MicroScan (94%). Several of these discordant yeasts displayed high MICs for antifungal agents. Conclusions Our study highlights the need of the MS and molecular approaches such as MALDI-TOF MS and ITS rDNA barcoding for the correct identification of emerging or cryptic yeast species; besides, some of these could be multidrug resistant. This work was the first experience in the implementation of the MALDI-TOF MS technology in Colombia. We found the first uncommon yeasts including Candida auris and we could identify Trichosporon faecalis. Our work highlights a clear necessity of an accurate yeast identification as a much more pertinent technique than the susceptibility profiles, because the most unusual yeasts exhibit resistance profiles to the few available antifungals.
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Affiliation(s)
- Andrés Ceballos-Garzón
- Departamento de Microbiología, Facultad de Ciencias, Unidad de Proteomica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia.,Department of Parasitology and Medical Mycology of the University of Nantes, Nantes Atlantique Universities, Faculty of Pharmacy, Nantes, France
| | - Gloria Cortes
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Florent Morio
- Department of Parasitology and Medical Mycology of the University of Nantes, Nantes Atlantique Universities, Faculty of Pharmacy, Nantes, France
| | - Edna L Zamora-Cruz
- Departamento de Microbiología, Facultad de Ciencias, Unidad de Proteomica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Melva Y Linares
- Departamento de Microbiología, Facultad de Ciencias, Unidad de Proteomica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Beatriz E Ariza
- Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Sandra L Valderrama
- Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Hospital Universitario San Ignacio, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Javier R Garzón
- Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Hospital Universitario San Ignacio, Bogotá, Colombia.,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Carlos A Alvarez-Moreno
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Patrice Le Pape
- Department of Parasitology and Medical Mycology of the University of Nantes, Nantes Atlantique Universities, Faculty of Pharmacy, Nantes, France
| | - Claudia M Parra-Giraldo
- Departamento de Microbiología, Facultad de Ciencias, Unidad de Proteomica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Bogotá, Colombia. .,Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Bogotá, Colombia.
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Oñate JM, Rivas P, Pallares C, Saavedra CH, Martínez E, Coronell W, López E, Berrio I, Álvarez-Moreno CA, Roncancio GE, Segura J, Vélez JD, Cortes JA, Parra-Giraldo CM, Álvarez JE, Romero AF, Zuluaga I, Camacho G. Colombian consensus on the diagnosis, treatment, and prevention of Candida Spp. disease in children and adults*,+. Infect 2019. [DOI: 10.22354/in.v23i3.792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Invasive Candidiasis (IC) and candidemia (as its most frequent manifestation) have become the main cause of opportunistic mycosis at hospital settings. This study, made by members of the Colombian Association of Infectious Diseases (ACIN), was aimed at providing a set of recommendations for the management, follow-up and prevention of IC / candidemia and mucous membrane candida infection in adult, pediatric and neonatal patients in a hospital setting, including the hemato-oncological and critical care units. All the data obtained through an exhaustive search were reviewed and analyzed in a comprehensive manner by all the members of the group, and the recommendations issued are being made after a careful review of the scientific literature available and the consensus of all specialists involved; the emergence of Candida Spp. problem is highlighted and a correct orientation to health professionals regarding the management of patients with candidiasis is provided in a rational and practical way, emphasizing patient evaluation, diagnostic strategies, prophylaxis, empirical treatment, directed treatment and preventative therapy.
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Flechas SV, Acosta-González A, Escobar LA, Kueneman JG, Sánchez-Quitian ZA, Parra-Giraldo CM, Rollins-Smith LA, Reinert LK, Vredenburg VT, Amézquita A, Woodhams DC. Microbiota and skin defense peptides may facilitate coexistence of two sympatric Andean frog species with a lethal pathogen. ISME J 2018; 13:361-373. [PMID: 30254321 DOI: 10.1038/s41396-018-0284-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 12/13/2022]
Abstract
Management of hyper-virulent generalist pathogens is an emergent global challenge, yet for most disease systems we lack a basic understanding as to why some host species suffer mass mortalities, while others resist epizootics. We studied two sympatric species of frogs from the Colombian Andes, which coexist with the amphibian pathogen Batrachochytrium dendrobatidis (Bd), to understand why some species did not succumb to the infection. We found high Bd prevalence in juveniles for both species, yet infection intensities remained low. We also found that bacterial community composition and host defense peptides are specific to amphibian life stages. We detected abundant Bd-inhibitory skin bacteria across life stages and Bd-inhibitory defense peptides post-metamorphosis in both species. Bd-inhibitory bacteria were proportionally more abundant in adults of both species than in earlier developmental stages. We tested for activity of peptides against the skin microbiota and found that in general peptides did not negatively affect bacterial growth and in some instances facilitated growth. Our results suggest that symbiotic bacteria and antimicrobial peptides may be co-selected for, and that together they contribute to the ability of Andean amphibian species to coexist with the global pandemic lineage of Bd.
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Affiliation(s)
- Sandra V Flechas
- Department of Biological Sciences, Universidad de los Andes, Bogotá, 111711, Colombia. .,Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá, Colombia.
| | | | - Laura A Escobar
- Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, AA 56710, Colombia
| | - Jordan G Kueneman
- Biology Department, University of Massachusetts Boston, Boston, MA, 02125, USA.,Smithsonian Tropical Research Institute, Panama, Apartado 0843-03092, Republic of Panama
| | - Zilpa Adriana Sánchez-Quitian
- Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, AA 56710, Colombia.,Environmental Management Group, Department of Biology and Microbiology, Universidad de Boyacá, Tunja, 150000003, Colombia
| | - Claudia M Parra-Giraldo
- Department of Microbiology, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá, AA 56710, Colombia
| | - Louise A Rollins-Smith
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, School of Medicine, Nashville, TN, 37232, USA
| | - Laura K Reinert
- Department of Pathology, Microbiology and Immunology, Vanderbilt University, School of Medicine, Nashville, TN, 37232, USA
| | - Vance T Vredenburg
- Department of Biology, San Francisco State University, San Francisco, CA, 94132-1722, USA
| | - Adolfo Amézquita
- Department of Biological Sciences, Universidad de los Andes, Bogotá, 111711, Colombia
| | - Douglas C Woodhams
- Biology Department, University of Massachusetts Boston, Boston, MA, 02125, USA.,Smithsonian Tropical Research Institute, Panama, Apartado 0843-03092, Republic of Panama
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18
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Arango C, Acosta-Gonzalez A, Parra-Giraldo CM, Sánchez-Quitian ZA, Kerr R, Díaz LE. Characterization of Actinobacterial Communities from Arauca River Sediments (Colombia) Reveals Antimicrobial Potential Presented in Low Abundant Isolates. Open Microbiol J 2018; 12:181-194. [PMID: 29997703 PMCID: PMC5997859 DOI: 10.2174/1874285801812010181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/15/2018] [Accepted: 05/16/2018] [Indexed: 12/04/2022] Open
Abstract
INTRODUCTION New strategies have been arisen to set a rapid and effective screening for selection of microorganism with bioactive potential. This study suggests that combination of physicochemical pretreatments and taxonomic dereplication of microbial collections through MALDI-TOF MS, facilitates the detection of low abundance actinobacteria with potential as a source of antimicrobial agents. MATERIAL AND METHODS An unstudied microbial community from a tropical river sediment in Colombian Orinoquía is described, applying an extended cultivation strategy using physicochemical pretreatments, biological screenings and taxonomic dereplication through MALDI-TOF MS approach. RESULTS Actinobacteria-like isolates (790) were growth and their antimicrobial activity was assessed against methicillin-resistant Staphylococcus aureus, Vancomycin-resistant Enterococcus faecium, extended-spectrum β-lactamase Klebsiella pnumoniae, and clinical isolates of Cladosporium cladosporioides and Epicoccum nigrum. Seventy-eight isolates, belonging to the Streptomycetaceae family according to 16S rDNA analysis were found to have antimicrobial activity and were categorized as low abundance actinobacteria by MALDI-TOF MS. CONCLUSION The results suggest that combination of physicochemical pretreatments and taxonomic dereplication of microbial collections through MALDI-TOF MS, facilitates the detection of low abundance actinobacteria with potential as a source of antimicrobial agents.
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Affiliation(s)
- Carolina Arango
- Universidad de La Sabana, Campus del Puente del Común, Km 7 Autopista Norte de Bogotá, Chia, Colombia
| | - Alejandro Acosta-Gonzalez
- Universidad de La Sabana, Campus del Puente del Común, Km 7 Autopista Norte de Bogotá, Chia, Colombia
| | - Claudia M. Parra-Giraldo
- Universidad de La Sabana, Campus del Puente del Común, Km 7 Autopista Norte de Bogotá, Chia, Colombia
| | - Zilpa A. Sánchez-Quitian
- Universidad de La Sabana, Campus del Puente del Común, Km 7 Autopista Norte de Bogotá, Chia, Colombia
| | - Russell Kerr
- University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
| | - Luis E. Díaz
- Universidad de La Sabana, Campus del Puente del Común, Km 7 Autopista Norte de Bogotá, Chia, Colombia
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Morales-López SE, Parra-Giraldo CM, Ceballos-Garzón A, Martínez HP, Rodríguez GJ, Álvarez-Moreno CA, Rodríguez JY. Invasive Infections with Multidrug-Resistant Yeast Candida auris, Colombia. Emerg Infect Dis 2018; 23:162-164. [PMID: 27983941 PMCID: PMC5176232 DOI: 10.3201/eid2301.161497] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Candida auris is an emerging multidrug-resistant fungus that causes a wide range of symptoms. We report finding 17 cases of C. auris infection that were originally misclassified but correctly identified 27.5 days later on average. Patients with a delayed diagnosis of C. auris had a 30-day mortality rate of 35.2%.
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Parra-Giraldo CM, Valderrama SL, Cortes-Fraile G, Garzón JR, Ariza BE, Morio F, Linares-Linares MY, Ceballos-Garzón A, de la Hoz A, Hernandez C, Alvarez-Moreno C, Le Pape P. First report of sporadic cases of Candida auris in Colombia. Int J Infect Dis 2018; 69:63-67. [PMID: 29421668 DOI: 10.1016/j.ijid.2018.01.034] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/29/2018] [Accepted: 01/30/2018] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Candida auris is a recently reported Candida species that is phenotypically similar to Candida haemulonii and related to hospital outbreaks. This organism can be misidentified as Candida haemulonii, Candida famata, Candida catenulata, or Rhodotorula glutinis by phenotypic approaches. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and DNA sequence analysis using internal transcribed spacer rDNA bar-coding provide an accurate identification. CASE REPORTS Three cases of C. auris infection in patients with risk factors for fungal infection (one admitted to the intensive care unit, one with lymphoma, and one with HIV; all three with previous antibiotic use) are reported; these infections were not epidemiologically related. Yeast isolates were recovered from blood, ocular secretion, and bronchoalveolar lavage and were misidentified as C. catenulata and Candida albicans by the phenotypic MicroScan method. The isolates were confirmed to be C. auris by means of MALDI-TOF MS and DNA sequence analysis. Antifungal susceptibility testing was performed on these C. auris isolates, which exhibited high minimum inhibitory concentrations to triazoles and amphotericin B. One patient survived and the other two died. Only one of these deaths was related to fungemia. CONCLUSIONS C. auris is an emerging and opportunistic multidrug-resistant human pathogen. It is necessary to strengthen measures to achieve an accurate and quick identification and also to avoid its dissemination. This will require improvements in health and infection control measures, as well as the promotion of antifungal stewardship in healthcare facilities.
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Affiliation(s)
- Claudia M Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia.
| | - Sandra L Valderrama
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Gloria Cortes-Fraile
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá DC, Colombia
| | - Javier R Garzón
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Unidad de Infectología, Departamento de Medicina Interna, Facultad de Medicina, Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Beatriz E Ariza
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Laboratorio Clínico, Área de Microbiología, Hospital Universitario San Ignacio, Bogotá DC, Colombia
| | - Florent Morio
- Département de Parasitologie et de Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155-IICiMed, Institut de Recherche en Santé 2, Nantes, France
| | - Melva Y Linares-Linares
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia; Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Andrés Ceballos-Garzón
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Alejandro de la Hoz
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Catalina Hernandez
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Carlos Alvarez-Moreno
- Grupo de Investigación en Enfermedades Infecciosas, Hospital Universitario San Ignacio, Pontificia Universidad Javeriana, Bogotá DC, Colombia
| | - Patrice Le Pape
- Département de Parasitologie et de Mycologie Médicale, Université de Nantes, Nantes Atlantique Universités, EA1155-IICiMed, Institut de Recherche en Santé 2, Nantes, France
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Gil-Bona A, Reales-Calderon JA, Parra-Giraldo CM, Martinez-Lopez R, Monteoliva L, Gil C. The Cell Wall Protein Ecm33 of Candida albicans is Involved in Chronological Life Span, Morphogenesis, Cell Wall Regeneration, Stress Tolerance, and Host-Cell Interaction. Front Microbiol 2016; 7:64. [PMID: 26870022 PMCID: PMC4735633 DOI: 10.3389/fmicb.2016.00064] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/14/2016] [Indexed: 11/24/2022] Open
Abstract
Ecm33 is a glycosylphosphatidylinositol-anchored protein in the human pathogen Candida albicans. This protein is known to be involved in fungal cell wall integrity (CWI) and is also critical for normal virulence in the mouse model of hematogenously disseminated candidiasis, but its function remains unknown. In this work, several phenotypic analyses of the C. albicans ecm33/ecm33 mutant (RML2U) were performed. We observed that RML2U displays the inability of protoplast to regenerate the cell wall, activation of the CWI pathway, hypersensitivity to temperature, osmotic and oxidative stresses and a shortened chronological lifespan. During the exponential and stationary culture phases, nuclear and actin staining revealed the possible arrest of the cell cycle in RML2U cells. Interestingly, a “veil growth,” never previously described in C. albicans, was serendipitously observed under static stationary cells. The cells that formed this structure were also observed in cornmeal liquid cultures. These cells are giant, round cells, without DNA, and contain large vacuoles, similar to autophagic cells observed in other fungi. Furthermore, RML2U was phagocytozed more than the wild-type strain by macrophages at earlier time points, but the damage caused to the mouse cells was less than with the wild-type strain. Additionally, the percentage of RML2U apoptotic cells after interaction with macrophages was fewer than in the wild-type strain.
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Affiliation(s)
- Ana Gil-Bona
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de MadridMadrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Madrid, Spain
| | - Jose A Reales-Calderon
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de MadridMadrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Madrid, Spain
| | - Claudia M Parra-Giraldo
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - Raquel Martinez-Lopez
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - Lucia Monteoliva
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de MadridMadrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Madrid, Spain
| | - Concha Gil
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de MadridMadrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS)Madrid, Spain
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22
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Marín E, Parra-Giraldo CM, Hernández-Haro C, Hernáez ML, Nombela C, Monteoliva L, Gil C. Candida albicans Shaving to Profile Human Serum Proteins on Hyphal Surface. Front Microbiol 2015; 6:1343. [PMID: 26696967 PMCID: PMC4672057 DOI: 10.3389/fmicb.2015.01343] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 11/16/2015] [Indexed: 01/11/2023] Open
Abstract
Candida albicans is a human opportunistic fungus and it is responsible for a wide variety of infections, either superficial or systemic. C. albicans is a polymorphic fungus and its ability to switch between yeast and hyphae is essential for its virulence. Once C. albicans obtains access to the human body, the host serum constitutes a complex environment of interaction with C. albicans cell surface in bloodstream. To draw a comprehensive picture of this relevant step in host-pathogen interaction during invasive candidiasis, we have optimized a gel-free shaving proteomic strategy to identify both, human serum proteins coating C. albicans cells and fungi surface proteins simultaneously. This approach was carried out with normal serum (NS) and heat inactivated serum (HIS). We identified 214 human and 372 C. albicans unique proteins. Proteins identified in C. albicans included 147 which were described as located at the cell surface and 52 that were described as immunogenic. Interestingly, among these C. albicans proteins, we identified 23 GPI-anchored proteins, Gpd2 and Pra1, which are involved in complement system evasion and 7 other proteins that are able to attach plasminogen to C. albicans surface (Adh1, Eno1, Fba1, Pgk1, Tdh3, Tef1, and Tsa1). Furthermore, 12 proteins identified at the C. albicans hyphae surface induced with 10% human serum were not detected in other hypha-induced conditions. The most abundant human proteins identified are involved in complement and coagulation pathways. Remarkably, with this strategy, all main proteins belonging to complement cascades were identified on the C. albicans surface. Moreover, we identified immunoglobulins, cytoskeletal proteins, metabolic proteins such as apolipoproteins and others. Additionally, we identified more inhibitors of complement and coagulation pathways, some of them serpin proteins (serine protease inhibitors), in HIS vs. NS. On the other hand, we detected a higher amount of C3 at the C. albicans surface in NS than in HIS, as validated by immunofluorescence.
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Affiliation(s)
- Elvira Marín
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - Claudia M Parra-Giraldo
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - Carolina Hernández-Haro
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - María L Hernáez
- Unidad de Proteómica, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain
| | - César Nombela
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain ; Instituto Ramón y Cajal de Investigación Sanitaria Madrid, Spain
| | - Lucía Monteoliva
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain ; Instituto Ramón y Cajal de Investigación Sanitaria Madrid, Spain
| | - Concha Gil
- Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain ; Unidad de Proteómica, Facultad de Farmacia, Universidad Complutense de Madrid Madrid, Spain ; Instituto Ramón y Cajal de Investigación Sanitaria Madrid, Spain
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23
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Rodríguez-Leguizamón G, Fiori A, López LF, Gómez BL, Parra-Giraldo CM, Gómez-López A, Suárez CF, Ceballos A, Van Dijck P, Patarroyo MA. Characterising atypical Candida albicans clinical isolates from six third-level hospitals in Bogotá, Colombia. BMC Microbiol 2015; 15:199. [PMID: 26438104 PMCID: PMC4594647 DOI: 10.1186/s12866-015-0535-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Accepted: 09/25/2015] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Candida species are the most frequently found fungal pathogens causing nosocomial disease in a hospital setting. Such species must be correctly identified to ensure that appropriate control measures are taken and that suitable treatment is given for each species. Candida albicans is causing most fungal disease burden worldwide; the challenge lies in differentiating it from emerging atypical, minor and related species such as Candida dubliniensis and Candida africana. The purpose of this study was to compare identification based on MALDI-TOF MS to standard identification systems using a set of nosocomial isolates. METHODS Eleven nosocomial samples were collected from 6 third-level hospitals in Bogotá, Colombia. All the samples were identified by combining MALDI-TOF MS with morphological characters, carbohydrate assimilation and molecular markers (D1/D2 and HWP1). RESULTS The present work describes the first collection of atypical Colombian Candida clinical isolates; these were identified as Candida albicans/Candida africana by their MALDI-TOF MS profile. Phenotypical characteristics showed that they were unable to produce chlamydospores, assimilate trehalose, glucosamine, N- acetyl-glucosamine and barely grew at 42 °C, as would be expected for Candida africana. The molecular identification of the D1/D2 region of large subunit ribosomal RNA and HWP1 hyphal cell wall protein 1 sequences from these isolates was consistent with those for Candida albicans. The mass spectra obtained by MALDI-TOF MS were analysed by multi-dimensional scaling (MDS) and cluster analysis, differences being revealed between Candida albicans, Candida africana, Candida dubliniensis reference spectra and two clinical isolate groups which clustered according to the clinical setting, one of them being clearly related to C. albicans. CONCLUSION This study highlights the importance of using MALDI-TOF MS in combination with morphology, substrate assimilation and molecular markers for characterising Candida albicans-related and atypical C. albicans species, thereby overcoming conventional identification methods. This is the first report of hospital-obtained isolates of this type in Colombia; the approach followed might be useful for gathering knowledge regarding local epidemiology which could, in turn, have an impact on clinical management. The findings highlight the complexity of distinguishing between typical and atypical Candida albicans isolates in hospitals.
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Affiliation(s)
- Giovanni Rodríguez-Leguizamón
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia. .,VIB Department of Molecular Microbiology, Leuven, Belgium. .,KU Leuven Laboratory of Molecular Cell Biology, Leuven, Belgium.
| | - Alessandro Fiori
- VIB Department of Molecular Microbiology, Leuven, Belgium. .,KU Leuven Laboratory of Molecular Cell Biology, Leuven, Belgium.
| | - Luisa F López
- Medical and Experimental Mycology Unit, Corporación para las Investigaciones Biológicas (CIB), Medellín, Colombia.
| | - Beatriz L Gómez
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia. .,Medical and Experimental Mycology Unit, Corporación para las Investigaciones Biológicas (CIB), Medellín, Colombia.
| | - Claudia M Parra-Giraldo
- Infectious Diseases Research Group, Microbiology Department, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Arley Gómez-López
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.
| | - Carlos F Suárez
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia. .,Biomathematics Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.
| | - Andrés Ceballos
- Infectious Diseases Research Group, Microbiology Department, Pontificia Universidad Javeriana, Bogotá, Colombia.
| | - Patrick Van Dijck
- VIB Department of Molecular Microbiology, Leuven, Belgium. .,KU Leuven Laboratory of Molecular Cell Biology, Leuven, Belgium.
| | - Manuel A Patarroyo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia. .,Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.
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